Do best before dates really matter that much or are they a bit of a scam? Wouldn't there be a natural tendency to cover one's butt by putting a few days earlier to be SURE, meaning there are likely a few more days of freshness left? Also doesn't early disposal drive product replacement sales?

There is always some time between expire date and moment when product is no more consumible. How much, depends on the product. Probably if you buy a freshly packed product, you'll enjoy it with more certainity

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